The Judge: I give you His Catholic Majesty King James III, may God bless him and keep him in exile

The Doctor: My lord, when I heard of Ralph Gower's discovery, I was reminded of this old volume. Mock, sir, if you will. These sages had access to much wisdom. The Judge: Doctor, witchcraft is dead and discredited. Are you bent on reviving forgotten horrors?

The Judge: You must have patience, even while people die. Only thus can the whole evil be destroyed. You must let it grow.

The Doctor: How do we know, sir, what is dead? You come from the city. You cannot know the ways of the country. See... this picture. Did Ralph not describe such a countenance? The Judge: Perhaps some such thing.

The Judge: Leave me to judge who is innocent.

Movie Trivia:

Patrick Wymark died shortly after making this film

At one point Christopher Lee was suggested for the role of the Judge but was considered to be too expensive.

The opening credits of some versions of the film title it "The Blood on Satan's Claw", where as others drop the word THE and title it simply "Blood on Satan's Claw."

According to director Piers Haggard it was Samuel Z. Arkoff, producer for American International Pictures, who came up with the film's title.

The film was originally conceived as three stories that would play out separately, but all have the unearthed remains of Satan being the linking factor between them. The stories of Peter Edmonton and his mad fiance, the possessed village children, and the Judge's battle with evil were all at first suppose to take place independently. However when the script was written it was decided that the plots should be combined to create one central story.